Beefy Boxes and Bandwidth Generously Provided by pair Networks
Syntactic Confectionery Delight
 
PerlMonks  

Answer: How to deal with undefined returned variables.

( #53046=categorized answer: print w/ replies, xml ) Need Help??

Q&A > subroutines > How to deal with undefined returned variables. contributed by knight

davorg presents the common idiom, but note that it can lose if the actual value returned is "defined but false", e.g. 0 or "0". To handle this robustly can be done in two lines:
$CONFIG{HASHTYPE} = $cfg->val("MISC","HASHTYPE"); $CONFIG{HASHTYPE} = "shal" if ! defined $CONFIG{HASHTYPE};

Comment on Answer: How to deal with undefined returned variables.
Download Code
Log In?
Username:
Password:

What's my password?
Create A New User
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others studying the Monastery: (5)
As of 2014-08-23 16:39 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    The best computer themed movie is:











    Results (175 votes), past polls